Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/08/2023, 16:32

General

  • Target
    4cfdd03fb25c40209ce186afe293831f_cryptolocker_JC.exe
  • Size 40KB
  • Sample230803-t1xcaaff31
  • SHA256 5d4dfe556137d5423d4e95fa753f7f5339a76c3ee676025bb030885b2db4231f
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4cfdd03fb25c40209ce186afe293831f_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\4cfdd03fb25c40209ce186afe293831f_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2464

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 40KB
        • SHA256 8d1873591b417960d04972921aa1a482a0ed9fbf873ce79f8b86347d2ca1a46e
        • MD5 SHA1 SHA512 SSDEEP

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 40KB
        • SHA256 8d1873591b417960d04972921aa1a482a0ed9fbf873ce79f8b86347d2ca1a46e
        • MD5 SHA1 SHA512 SSDEEP

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 40KB
        • SHA256 8d1873591b417960d04972921aa1a482a0ed9fbf873ce79f8b86347d2ca1a46e
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
        • Size 315B
        • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
        • MD5 SHA1 SHA512

        memory/1988-133-0x00000000004F0000-0x00000000004F3000-memory.dmp

        memory/1988-134-0x0000000002320000-0x0000000002326000-memory.dmp

        memory/1988-135-0x0000000002320000-0x0000000002326000-memory.dmp

        memory/1988-136-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/1988-151-0x00000000004F0000-0x00000000004F3000-memory.dmp

        memory/2464-150-0x00000000004F0000-0x00000000004F3000-memory.dmp

        memory/2464-153-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/2464-154-0x00000000005D0000-0x00000000005D6000-memory.dmp